Product Description

Zinc Oxide (ZnO, CAS:1314-13-2) is an inorganic oxide in white powder form. We supply indirect process, direct process, active zinc oxide and nano zinc oxide grades. Featuring high purity, low heavy metal content and stable batch consistency. Widely applied in rubber vulcanization activation, coating pigment, ceramic glaze, feed additive, cosmetic sunscreen and pharmaceutical ointment. Custom particle size & heavy metal control available, sample test and OEM packaging supported.

Specification & Grade Selection Table

Characteristics

• Fine white powder with strong hiding power
• Good thermal stability, resistant to thermal decomposition
• UV blocking & antibacterial property (nano grade)
• Insoluble in water, soluble in acid and strong alkali
• Uniform particle size and good dispersion
• Multiple grades, heavy metal content controllable

Selling Points

• Factory direct supply, stable production capacity & reliable lead time.
• Strict QC, COA test certificate for every batch.
• Low heavy metal, comply with EU & US standards.
• Custom particle size and surface modification for your formula.
• Small trial order acceptable, bulk container shipment.
• Professional export team with complete documents.

Application

• Rubber industry: vulcanization activator, improve tensile strength, wear resistance & anti-aging (tire, hose, seal strip)
• Coatings & paint: white pigment, anti-rust & UV protection
• Ceramic & glass: glaze flux, enhance gloss
• Feed: zinc nutrition supplement
• Cosmetic & Pharma: physical UV filter, astringent ointment
• Plastic: light stabilizer, antibacterial modifier
• Others: desulfurizer, electronic material

Technology

Main technologies: indirect (French) process, direct (American) process, wet process and nano synthesis.

• Indirect process: zinc metal vaporization & oxidation, high purity & low impurity
• Direct process: zinc ore/slag high-temperature oxidation, cost-effective
• Active ZnO: special calcination, larger specific surface area
• Nano ZnO: liquid precipitation, ultra-fine particles, superior UV & antibacterial performance

Theory

Zinc oxide is ionic oxide with wurtzite crystal structure.

• Rubber vulcanization: ZnO reacts with stearic acid to form zinc soap, activate sulfur cross-linking and build stable 3D rubber network.
• UV shielding: high refractive index to reflect & absorb UVA/UVB.
• Antibacterial effect: photo-generated reactive oxygen species damage microbial cell membrane.
• Pigment performance: high refractive index provides hiding power.

Services

1. Free sample (freight collect)
   COA certificate for each batch
   MSDS available
   Support third-party test (SGS etc.)
   Custom package: 25kg bag / drum, neutral or OEM logo
   Full export documents
   Technical support: grade selection & formula consultation

Production Process

Indirect process: Zinc ingot → melting → zinc vapor oxidation → cooling collection → grinding & classification → impurity removal → inspection → packaging.
Direct process: Zinc ore/slag → high temperature roasting & oxidation → air separation purification → milling → test → packaging.
Active ZnO: Zinc salt solution reaction → precipitation → washing → calcination activation → milling & sieving.

Precautions

• Store sealed, dry & moisture-proof to prevent agglomeration.
• Wear dust mask and goggles during operation, avoid dust inhalation.
• Avoid eye & skin contact; rinse with plenty of water once touched.
• Keep away from strong oxidants.
• Not for oral consumption.
• Use up quickly after opening.